Database Management Systems Mcqs
Page No. 78
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In E-R Diagram derived attribute are represented by
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A primary key is combined with a foreign key creates
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A file manipulation command that extracts some of the records from a file is called
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A data dictionary is a special file that contains:
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Which of the following is a comparison operator in SQL?
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The result of the UNION operation between R1 and R2 is a relation that includes
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Which are the two ways in which entities can participate in a relationship?
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